Abstract
A portion of the Intergenic Spacer (IGS) of the ribosomal RNA operon of 74 isolates of 11 Ar? millaria species from Europe and North America was amplified using the polymerase chain reaction. Am- plifications were made from scrapes of living mycelium without DNA extraction. Alu I digests ofthe amplified product were electrophoresed in agarose and stained with ethidium bromide. With few exceptions, each tax? on had a unique combination of restriction fragments. Most taxa had a single Alu I pattern, but two restric? tion patterns were seen among isolates of A. borealis,
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